David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall reacts during a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, reacts during a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, arrives to hold a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall speaks during a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, speaks during a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall speaks during a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, speaks during a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall holds a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, holds a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall reacts during a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, reacts during a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall holds a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, holds a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall holds a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, holds a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall holds a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, holds a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall reacts during a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, reacts during a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth STEFAN WERMUTH

Foto: Stefan Wermuth/REUTERS/PIXSELL/REUTERS/PIXSELL

David Goodall reacts during a news a conference a day before he intends to take his own life in assisted suicide, in Basel David Goodall, 104, reacts during a news conference a day before he intends to take his own life in assisted suicide, in Basel, Switzerland May 9, 2018. REUTERS/Stefan Wermuth TPX IMAGES OF THE DAY STEFAN WERMUTH